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The grep command searches for patterns within files and prints matching lines. grep [options] [content] [file] Search for a pattern in a file: grep "p 阅读全文
posted @ 2024-05-17 03:23
Zhentiw
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Head The head command is used to display the beginning of a file or the first few lines of input. It's a useful command for quickly viewing the start 阅读全文
posted @ 2024-05-16 03:44
Zhentiw
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The read command is used to take input from the user. Reading a single input value: echo "Enter your name:" read NAME echo "Hello, $NAME!" Output afte 阅读全文
posted @ 2024-05-16 03:38
Zhentiw
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The echo command is used to display a line of text or string that is passed as an argument. It's one of the most basic and frequently used commands in 阅读全文
posted @ 2024-05-16 03:23
Zhentiw
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The wc command computes the numbers of lines, words, and bytes in a file: wc notes.txt # > 3 7 35 /home/substack/notes.txt Count words wc -w notes.txt 阅读全文
posted @ 2024-05-16 03:07
Zhentiw
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return true is a number is odd /* _____________ Your Code Here _____________ */ type LastChar<T extends string> = T extends `${infer First}${infer Res 阅读全文
posted @ 2024-05-15 03:28
Zhentiw
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For example I want to override and rename file.txt_ with file.txt mv file.txt{_,} You can also check the full command with echo echo mv file.txt{_,} # 阅读全文
posted @ 2024-05-15 03:06
Zhentiw
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Prim's algorithm is a popular method used in computer science for finding a minimum spanning tree for a connected, undirected graph. This means it fin 阅读全文
posted @ 2024-05-14 15:06
Zhentiw
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ometimes you may want to determine whether a string literal is a definite type. For example, when you want to check whether the type specified as a cl 阅读全文
posted @ 2024-05-14 03:25
Zhentiw
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mkdir To make a new directory, just execute the mkdir command with a list of new directory names to make as arguments: mkdir hooray and now a new dire 阅读全文
posted @ 2024-05-14 03:07
Zhentiw
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